1.
a small bit that drills a first hole to guide a larger drill.
钻凿初洞来导引大钻头的一种小钻头。
2.
unit-type drill head
组合钻床钻头, 标准钻头
3.
small bit used in dentistry or surgery.
牙科或外科中使用的小的钻头。
4.
drill(ing) head
钻头; 主轴头; 钻床床头箱; 钻削动力头;钻头头部, 钎头
5.
part of a drill that grips the bit
夹头（钻或钻床上用以夹住钻头的部分）.
6.
Bolts with drilled or undersize heads shall not be used.
被钻孔或头部尺寸太小的螺栓不能使用。
7.
Artificial Neural Network Based Drill Wear Monitoring Using the Wavelet Decomposition of a Power Spectrum
基于功率谱小波分解的神经网络钻头磨损监测
8.
The Research of Producing and Test of Jointing Intensity of Small Caliber PDC Bit;
小口径PDC钻头制造与焊接强度检测研究
9.
A small hand tool having a spiraled shank, a screw tip, and a cross handle and used for boring holes.
手钻一种小的手工工具，有螺旋尖头，带槽纹的钻身，横装的手柄，作钻孔用
10.
According to the drillpipe structural characteristics, a dolly appropriate for drillpipe and Kelly detection is designed, of which its probe is adjustable.
根据钻杆的结构特点,设计了探头距离可调的适用于圆钻杆和方钻杆的探测小车。
11.
easing the bit in
钻头轻压慢转钻进地层
12.
A tool used for drilling.
钻头用于钻孔的工具
13.
a bit used in drilling for oil.
油田钻井使用的钻头。
14.
A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
钻头曲柄、钻柄或钻床之上用于钻孔的尖头工具
15.
A small piece of wood or metal placed on the head of a pile to prevent damage to the pile while it is being driven.
桩垫木放在木桩一头的小块木头或金属，使钻凿时不致损坏
16.
eggbeater PDC bit
打蛋器型PDC钻头
17.
Drilling is cutting a hole with a drill.
钻削就是用钻头钻一个孔。
18.
Comparative analysis of drilling characteristics of dia- mond bits and roller bits
金刚石钻头与牙轮钻头钻井特点对比分析